Are these hens or roos?

I saw this ad that this guy was giving away his roosters, so I went to go get one and when I got their they were so pretty I got all of them. Plus he had told me if I did not get them someone else was coming later to get them to eat, so I figured what the heck. I thought a few of them looked like they might be hens, but not having a lot of experience I was not sure and was hoping someone could help me out. He said they are about 8 months old. I do not see any spurs on them or anything like that, so I am at a loss as to if they might be hens. But I do have a 4 month old turken and it is already showing a larger comb and the waddles?? ( the things that hang down on their face when they are roos) There are 4 total and the last pic is kind of blurry. I tried to get at least two pictures of each.